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[目的]探讨夏季高温高湿环境下,践踏胁迫对匍匐翦股颖果岭草坪草生理特性的影响。[方法]以3份匍匐剪股颖品种(系)为试验材料,测定并分析叶片相对含水量、质膜相对透性、过氧化物酶活性、超氧化物歧化酶活性、过氧化氢酶活性、脯氨酸含量及丙二醛含量这7个相关的生理指标。[结果]践踏胁迫下供试草种的叶片相对含水量、质膜相对透性、丙二醛含量、脯氨酸含量、保护酶活性等指标在践踏强度、草种之间均存在显著性差异(P<0.05),以粤选1号匍匐剪股颖各指标的变化幅度最小,表现出了较强的耐践踏性。[结论]供试草种耐践踏性依次为粤选1号>新品系2号>Penncross。
[Objective] The purpose was to study the effect of trampling stress on the physiological characteristics of creeping bentgrass lawn grass under high temperature and high humidity environment in summer. [Method] With 3 varieties of Creeping Prunus spp. As test material, relative water content, relative permeability of plasma membrane, peroxidase activity, superoxide dismutase activity and catalase activity were measured and analyzed. , Proline content and malondialdehyde content of these 7 related physiological indicators. [Result] Compared with the trampling intensity and the grass species, the relative water content, the relative permeability of plasma membrane, the MDA content, the proline content and the protective enzyme activity under the trampling stress were significantly different (P <0.05). The variation range of each index of Creeping Prongulae of Yue et al. 1 was the smallest, showing a strong resistance to trampling. [Conclusion] The trampling resistance of tested grasses were as follows: Yue Xuan 1> New Line 2> Penncross.